Motion-reversing mechanism



March 26, 1929. J. T. :nl LoN- MOTION REVERSING MECHANISM March 26,1929. J. T. DILLON l d MOTION REVERSING MECHANISM 2 sheets-sheen 2 FiledJuly 9, 1927 'aff/1yr. K

ilatented Main E6, 1929.

UNITED STATES PATENT OFFICE.,

J'HN T. DILLON, OF BUFFALO, NEW YORK, ASSEl-NOR, MESNEASSIGl'ITlVIlElI'FS,V TO

STIEt'UTHERSWELLSMTTUSVILLE CORPRA'I CORPORATION 0F MARYLAND.

.@Il, F WARREIL PENNSYLVANIA, A

Application iled july 9, 19272 ribis in vent-ion relates to a heavy dutyinotion reversing ineclianisni which is more par ticularly designed :toruse in oil well niachinery whereby various tools and apparatus areraised and lowered during the operations ol drilling, completing andpumping an oil well by a priine mover, such as a gas engine, `which runswithout reversing its nio tion.

lt is the purpose of this invention to provide an improved reversinggearing ot this character which simple, durable and coinpact inconstruction and operation, which has its brake niechanisrn so designedthat the saine is prevented `:troni becoming unduly hot, and providedwith nieans for eliieiently lul'iricating the pinions or the reversinggearing.

In the accornpanyii'ig drawings: -Figure 1, is a vertical longitudinalsection ot' the reversing gearing enibodyiirgl niy iinprovenients, thesection being taken on line 1-1, F 2.

Figure 2 is a cross section taken on line 2 2 Fig. 1.

Figure 3 is an end view of 'the outboard bearing of the driven shaft.

Fig. 4l is a longitudinal sectionol2 one ofthe intermediate planetarygear pinions and the adjacent part of the housing carrier, the spindlefor pivotally mounting the pinion on the carrier and the means foradjusting the bearing between the spindle and the pinion.

Similar characters of reference indicate like parts in the several viewset the drawings i The reference nuineral 10 represents the base of themotion reversing niechanisnn l2 the driving shalt, and 13 the outboardbearing whereby the outer end of the shaft is journaled on the pedestal111 rising ntroni the base.

The driving shaft is rotated in the salnc direction by a motor of anysuitable character,`

such 'for example as a non-reversing engine, the power shaft et which isprovi-ded witha suitable 'flange for connection with a coupling liangel5 carried by a driving sleeve 16, which is secured by a key 17, orother suit-` able means to the outer end `olf the driving shaii't. p

Surrounding the opposing inner ends oi the central part of the drivingsha'tt is a driven sleeve 18 which is journaled on the inner part oftheshaft by means of roller bean Serial re. 20454-59.

ings 19, 20, and is adapted to either turn aroundsaid shaltorto turnwiththesanie. i Un this driven sleeve is inountcd a pulley 2l l'roinwhich power is taken oit by nleans oi a hoist* ing rope, cable or thelihe for raising and loweringY any tools or equipment used in theoperation ci' drilling a well and getting the saine rerdy ior use. Thispulley is preiteru ably mounted on the driven sleeve so as to turntherewith by engaging the radial sides oit' internal flanges 227 23 onthe pulley with the correspending sides el" the external flanges 21h 25on the driven sleeve, a elain ping ring 2G engaging the opposite radialside or one oi the pulliy flanges, and fastening screws 27, connectingsaid clamping ring and the respective internal and external langes.

Lubrication oli the bearings et the driven sleeve which supports thepulley is preferably etlceted by a plurality of supply ducts 28 eachhaving its inner end secured in an opening 29` `which communicates`witlrthe bore of the driven sleeve between its bearings while its outer endis arranged in a radial passage 3l in the inner :flange 22 of' thepulley and provided with a screw plug 32. Upon removing the plug 32 alul'iricant, either in the 'torni oi oil or grease niay be introducedinto the driven sleeve from which it flows to the bearings 195 207 so asto insure easy running and reduced wear.

ifi clutch is provided for coupling the pulley and shait't so as tocoiupel the saine to turn together by a direct drive in a iforwardVdirection and uncoupling the same so as to pei-init et driving thepulley indirectly freni the driving shaft in a reverse direction. Thisclutch in the preferred 'forni shown in the drawings, is constructed asfollows:

The niuneral 33 represents an annular' clutch riin or ring arranged onthe outer' end et the pulley and a plurality of clutch or driving shoesniovable toward and from the periphery ot 'the clutch ring and providedon their inner sides with linings or facings et asbestos ad aptcd togrip the clutch rini. rihesedriving shoes are moved toward and il' nuthe clutch ring by means which ceniprise radially movable shitting rods30 each of which is guided in a radial guideway 36 i'orined en a drivingor clutch head 37 which has a hub 38 mounted on the adjacent part of theshalt so as to be compelled to turn therewith. `Each of these shiftingrods is the head is a shifting collar 42 which may be actuated by anysuitable mechanism, for example a rock lever 43 pivoted on the pedestaland having its lower arm connected with an operating mechanism, and asplit ring 45 engaging with an annular groove 46 in the outer end oftheshifting collar and connected Y with the upper arm of the rock lever 43.The

sis

reciprocating motion of this collar is transmitted to eachoi.l theshifting rods by a toggle mechanism including a cam 44 pivoted on thedriving head and engaging with the shoulders .at opposite ends of thereduced neck 47 on the adjacent shifting rod, and a toggle link 48connecting an arm 49 on the :am with the shifting collar, as shown inFigure 1.

` y leans are provided whereby, when the pulley is released from thedirect connection with the driven shaft, the pulley may be turned in areverse direction by motion derived indirectly from the shaft. Thesemeans in their preferred form are constructed as follows The numeral 50represents a reverse driving gear pinion or rim keyed on the driving orcouplingsleeve 16 and meshing constantly with a plurality-of drivingplanetary gear pinions 51. "The numeral 52 represents a plurality ofdriven planetary Vgear pinions, one of which is arranged along the sideof each driving planetary pinion 51 and forms a pair therewith. Each ofthese driven plan# etary gear pinions 52 meshes with a driving planetarygear pinion 51, and also with argear wheel or rim 53 formed on the innerend of Athe driven sleeve 18 which carries the pulley. Three pairs ofsuch driving and driven planetary gear pinions are preferably employedand arranged alternately and in an annular Vrow around the central partsof the driving and Ydriven sleeves, asshown in Figures 1 and 2.

The driving and driven planetary gear pinions are mounted within ahousing or f carrier which comprises inner and outer circular end walls8 and 9 which are journaled withl their bores on bearings 54, 55,arranged on the opposing ends of the driving vand driven sleeves 16, 18and a cylindrical side Wall 56 connecting the peripheries of said endwalls. Each of the planet-ary gear pinions is journaled on the housingor carrier by a spindle or axle 57 passing through the respectiveplanetary gear pinion and engaging its opposite ends with openings 58,59 in the outer and inner housing end walls, and two annular rows ofoppositely tapering conical bearing rollers 70, 71 arranged betweenopposite ends of the spindle and the planet ary gear pinionV andengaging with correspondingly tapering ball races 60l 61. arranged onsaid spindle and pinion, respectively. llach of the ball races 60, 60 isprovided at its ends with peripheral flanges 82, S3 which engage withopposite ends of the respective bearing rollers 70, 71 so as to permitthese rollers to move circumferentially on the races but compelling therollers to move longitudinally with the races. The opening 59 preferablyextends through the respective wall of the enclosing carrier but theopening 58 terminates at its outer end in a cavity 66 for a purposewhich will presently appear.

Each of the spindles is prevented from turning, but is free to slidelengthwise by means of al spline 72 arranged on the side of its outerend and engaging with a longitudinal groove 73 at the opening 58.

For the purpose oit' taking up any wear or looseness in the bearings oiany one ot the planetary gear pinions, the spindle of the same is movedinwardly the required extent, this being preferably accomplished by anadjusting screw 62 working in the outer end wall of the housing andengaging the adjacent portion of the spindle.

Upon moving the spindle 57 inwardly its inner end slides through theball race remote from the screw because this ball race cngages the innerside ot the housing carrier but the ball race near this screw is engagedby a shoulder 84 on the spindle thereby compelling this last mentionedball race to move with the spindle, so that the two inner ball races 60,60 are brought closer together and the wear upon the respective bearingis taken up.

For the purpose of efliciently lubricating the bearings of eachplanetary gear pinion, the same is provided with a longitudinal passage63 which communicates at. its inner end by lateral passages 64 in thespindle with the space within the bore of the planetary gear between itsbearings while. its outer end communicates by lateral passages 65 withthe cavity 66 in the outer part of the opening 56. Grease or liquidlubricant is intrmluced into this cavity through a filling opening 67 inthe side ot' the carrier or housing. which tilling opening is normallyclosed by a screw 'plug 68. This lubricant passes from the cavity 66through the passages in the spindle into the planetary gear pinion andto the bearings at oppositie ends thereof. The lubricant which escapesfrom the bearings is caught in one of the pockets 69 which are formed inthe housing around each pair of driving and driven planetary' gearpinions whereby the `teeth of the latterI are constantly lubricated andprevented fremwearing unduly as well as rendered less noisy., Theeireumferential wall of the housing forming the pockets (il) is arrangedcomparatively close to the planetary pinions so as to leave onlyv aslight f :learance between the same whereby the oil or grease is kept inconstant motion therein and continiuuisly thrown oif by centrifugalforce and again picked up by the plznietary pii'iions so as to not onlyeffectively lubricate the planetary gear pinions, but also lubricate thedriving and driven @rear pinions 50, 53 and the bearings of thehousinzv. This cycle carried on regardless of whether the pulley isturning forwardly or bacliwardly and thus permits of operatingtherevGrainel gearing; with consid-` erably less lubricant than has beenrequired heretofore.

The housing or carrier is held against turning so that the axes of theplanetary gear pinions are at rest and thereby cause the motion of thedriving` gear pinion on the driving' shaft to turn the driven sleeve 18which carries the pulley in a reverse direction. The holding of thiscarrier is effected by a b alie drum 74 connected by a web 75 with theperiphery of the carrier and a brake band 76 adapted to grip theperiphery of the brake drinn and hold the same against rotation. Thisbrake band is operated so as to grip or release the brake drum by athree armed roch lever pivoted on the base and having two diametricallyopposite arms 7i", 77 connected with opposite ends of the brake bandwhile its third arm 78 is adapted to be operated manually. Upon turning`the triple armed rock lever in one direction the brake band is loosenedand the pulley is capable of being turned forward directly by the shaftupon closing the clutch, but when this clutch is opened and the brakeband is tightened to hold the planetary gearing against turning then thepulley will be turned backward.

It is preferable to operate the clutch and brake mechanism so that theycannot be closed at the saine time, but both can be left open at thesame time. The preferred means for this purpose consists of anintermediate elbow lever 7 pivoted on the base and having' o'ne armconnected by a link 79 with the lower arm 78 of the bralre lever whilethe other arm of this elbow .lever is connected by a link 8O with thelower arm of the clutch lever In the neutral or central position ofthese parts the clutch and brake are both open but when moving the samein one direction from this neutral position the clutch will be closedand when moving the same in the other direction from this neutralposition the brake will be closed.

In the absence of any provision to prevent it, the brake drum and bandare liable to become unduly heated when used at frequent intervals. Toavoid this objection the `web connecting the brake drum and carrier isprovided with a plurality of transverse open-- inpgs Sl which. permitair to pass through the web and carry away the heat and thus leep` thedrum and band of the brake mechanism cool.

l claim as my invention l. A motion reversing` mechanism comprisinn` adriving;l shaftn a pulley mounted concer ically with said shafj and areversn ing); gearing.;l for conrecting` and disconnecting;- the shaftand pulley inciudingg'a driving agi rr pinion connected with the sha-ft,a driven gear pinion connected with the pulley; a plurality of pairs etintermeshinp; planetary gear pinions one member ofleacli pair meshingwith said drivingl gear pinion and Vthe other member of each pairmeshingl with said driven gear piniom a spindle pass-v in n; througheach planetary gear pinion and having` a passage extending from one endthereof to the interior of the respective pinion7 an enclosing` carrierjournaled at its opposite ends on said shaft and pulley and providedwith a plurality of pockets cach of which contains one pair of Saidplanetary gear pinions, and provided adjacent to one endof eachplanetary gear pinion with an opening extending through the carrier andreceivi'ln' one end of the spindles and provided adjacent to the otherend of the respective planetary gear pinionwith a cavity which receivesthat end of the respective spindle having,T a passage and means forsupplying a lubricant to said cavity.

2. A motion reversing mechanism comprisinn` a drivingshaft, a pulleymounted concentrically with said shaft, and a reversing lgearing forconnecting and disconnecting the shaft and pulley includingl a drivingrear pinion connected with the shaft, a driven gear pinion connectedwith the pulley, a plurality of pairs of intermesliingr planetarylgearpinions one member of each pair meshi'ui55,v with said drivinggearpinion and the other member of each pair meshing with said driven gearpinion, a spindle passing through each planetary gear pinion and havinga passage extending from one end thereof to the interior of therespective pinion; an enclosing` carrier journaled at its opposite endson said shaft and pulley and provided with a plurality of poel-:ets eachof which contains one pair of said planetary gear pinions, and providedadjacent to one end of cach planetary gear pinion with an openinglextending' through the carrier and receiving' one end of one of thespindles and provided adjacent to the other end of the respectiveplanetary gear pinion with a eavity which receives that end of thercspective spindle having' said passage; means for supplyingl alubricant to said cavity, conical roller bearings supporting oppositeends of and means for taking up said conical bearings consisting ofadjusting screws arranged on the carrier and projecting into saidcavities each engaging the adjacent end of the respective spindle. Y f Y3Q A motion reversing mechanism comprising a driving shaft, a pulleymounted concentrically with said shaft, and a reversing gearing forconnecting and disconnecting the shaft and pulley including a drivinggear pinion connected with the shaft, a driven gear pinion connectedwith the pulley, a plurality of pairs ot' interw meshing planetary gearpinions one member of each pair meshing with said driving gear pinionand the other member of cach pair meshing With said driven gear pinion,a spindle passing through each planetary gear pinion and having apassage extending from one end thereof to the interior of therespect-ive pinion;ran enclosing carrier journaled at itsopposite endson said shaft and pulley and provided with a plurality of pockets eachof which contains one pair of said planetary gear pinions, and providedadjacent to one end of each planetary gear pinion with an openingextending through the carrier and receiving one end of one of thespindles and provided adjacent to the other end of the respectiveplanetary gear pinion with a cavity which receives that end of therespective spindle having said passage; means tor supplying a lubricantto said cavity, conical roller hearings supporting opposite ends of eachplanetary gear pinion on its spindle, means for taking up said conicalbearings consisting of adjusting screws arranged on the carrier andprojecting into said cavities each engaging the adjacent cnd of therespective spindle, and means for preventing each of said spindlesl toslide on the larrier but preventing the same from turning thereon.

In testimony whereof I aix my signature.

JOHN T. DILLON.

